The link I provided walks you through the process step by step. I really can't comment because I haven't ever attempted to regress bees. The only bees I have had on small cell are bees I have captured that where all ready regressed.
If you look at the other threads on regression... you will quickly see you are not going to get a simple answer. These types of threads end up being lightning rods and 100s of posts long..
Good Judgement comes from Experience. Experience comes from Poor Judgement.